Localized Flexoelectric Effect Around Ba(CuNb) Nano‐Clusters in Epitaxial BiFeO3 Films for Enhancement of Electric and Multiferroic Properties DOI Creative Commons
Hyunseok Song, Sung Woo Hwang, K. D. Sung

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract Room‐temperature (RT) multiferroic materials have received significant research attention for various potential applications; however, their properties are not suitable real‐world implementation. In this study, a nano‐scale localized flexoelectric effect is introduced to enhance the RT performance of epitaxial bismuth iron oxide (BiFeO 3 ; BFO) thin films by embedding 10 mol% Ba(Cu 1/3 Nb 2/3 )O (BCN) nano‐clusters into host BFO film, which originally has rhombohedral crystal structure. By utilizing nano‐clustering, large out‐of‐plane coherent strain around nano‐clusters, resulting in highly strained tetragonality structure; subsequently, exhibit peculiar types domains and domain walls, such as rotational vortices antiparallel dipole configurations. These structures, originate from at nano‐scale, enable excellent ferroelectric, ferromagnetic, magnetoelectric coupling. This study reveals that local variation field considerably impacts formation unusual domain‐wall structures. suggests controlled introduction with different structures promising achieving desired properties.

Language: Английский

Interchangeable films made from cellulose acetate and different types of carbon nanotubes with humidity sensing capabilities DOI Creative Commons

Madalina Elena Bistriceanu,

Andreea Laura Chibac-Scutaru, Florin Tudorache

et al.

Sustainable materials and technologies, Journal Year: 2025, Volume and Issue: 43, P. e01237 - e01237

Published: Jan. 5, 2025

Language: Английский

Citations

2
Flexible Exchange‐Biased Films with Superior Strain Stability DOI Open Access
Xilai Bao, Huali Yang, Yali Xie

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 12, 2024

Abstract The exchange bias (EB) effect plays an undisputed role in the state‐of‐art spintronic devices, both rigid and flexible. However, poor stability of EB under mechanical strain is detrimental to construction reliable flexible which poses a great challenge for potential wearable applications. Here, it revealed that strain‐induced variation field can be greatly suppressed by engineering IrMn/[Co/Pt] 3 systems featured with perpendicular magnetic anisotropy (PMA). Particularly, multi‐stacks strong PMA, poorly crystallized IrMn structure, parallel alignment ferromagnetic (FM) moments biasing applied during deposition, exceptional good among reported realized, results from stable FM moments, low transfer efficiency, eliminated strain‐driven training effect. These provide effective approach develop devices superior stability, rendering them contenders realms sensor storage

Language: Английский

Citations

4
Omnidirectionally Stretchable Spin-Valve Sensor Array with Stable Giant Magnetoresistance Performance DOI
Pan Li-li, Yali Xie, Huali Yang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Flexible magnetic sensors, which have advantages such as deformability, vector field sensing, and noncontact detection, are an important branch of flexible electronics significant applications in fields magnetosensitive electronic skin. Human skin surfaces complicated deformations, pose a demand for sensors that can withstand omnidirectional strain while maintaining stable performance. However, existing sensor arrays only stretching along specific directions prone to failure under deformations. Here, we demonstrate omnidirectionally stretchable spin-valve array with high stretchability excellent By integrating the modulus-distributed structure liquid metal, maintain its performance complex enabling overall system stretchability. The fabricated exhibits nearly unchanged giant magnetoresistance ratio 8% maximum sensitivity 0.93%/Oe upon up 86% without fatigue over 1000 cycles. Furthermore, this is characterized by sensing deformations be applied Our results provide insights into development next-generation wearable magnetoelectronics.

Language: Английский

Citations

0
Magneto-mechanical effects in a flexible magnetic system studied through combined MOKE magnetometry and mechanical testing DOI
Hajer Ben Mahmoud,

N. Girodon-Boulandet,

Mohamed Haboussi

et al.

Review of Scientific Instruments, Journal Year: 2025, Volume and Issue: 96(2)

Published: Feb. 1, 2025

We explore the magnetic properties of a thin Co film deposited on Kapton® substrates using magneto-optical Kerr effect in longitudinal configuration. developed magnetometer integrated with tensile testing machine to investigate magnetization reversal phenomena under applied strain. The machine, custom-designed fit experimental constraints, applies uniaxial stress samples, facilitating study magnetoelastic effects. Calibration digital image correlation ensures accurate strain measurements. Our findings demonstrate that application significantly influences curves, highlighting emergence anisotropies and changes coercive saturation fields.

Language: Английский

Citations

0
Flexible Hybrid Integration Hall Angle Sensor Compatible with the CMOS Process DOI Creative Commons

Ye Luo,

Youtong Fang, Yang Lv

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(3), P. 927 - 927

Published: Feb. 4, 2025

Silicon-based Hall application-specific integrated circuit (ASIC) chips have become very successful, making them ideal for flexible electronic and sensor devices. In this study, we designed, simulated, tested hybrid integration angle sensors that can be made using complementary metal-oxide-semiconductor (CMOS) technology. These are manufactured on a 100 µm-thick polyimide (PI) membrane, which is suitable large-scale production has strong potential industrial use. The sensitivity of 0.205 V/mT. Importantly, their remains stable even after being bent to minimum radius 10 mm undergoing bending cycles. experiment shows these devices promising as sensors.

Language: Английский

Citations

0
Analysis of Magnetic Properties of Magnetostrictive FeCoGa Thin Film Patterns Grown on Flexible Substrates DOI
Zhen Yang,

Ziqin Meng,

Jiabao Huang

et al.

Journal of Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Language: Английский

Citations

0
A Flexible Field‐Free Spin‐Orbit Torque Driven Programmable Spin Logic Device DOI Open Access
Meiling Li, Mengxi Wang, Xiaoguang Xu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Field‐free magnetization switching driven by spin‐orbit torque (SOT) is an up‐and‐coming solution for spintronic devices, which enables energy efficient reconfigurable logic‐in‐memory computing well‐suited next‐generation data‐intensive applications. However, the use of ferromagnetic/antiferromagnetic systems in flexible spin logic devices still early stages development. Here, a polyimide/Ta/Pt/Co/IrMn/Pt‐based are reported as potential candidate field‐free programmable By controlling exchange bias at Co/IrMn interface, Hall bar device has successfully realized SOT‐induced under zero field. Basing on its capability, can realize all‐electric controlled logic. Using two AND, NOT, OR, NAND, and NOR Boolean functions be achieved path pulse current, provides new spin‐logic with manipulation.

Language: Английский

Citations

0
Modulation of Giant Magnetoimpedance Effect in Co-Based Amorphous Wires by Carbon-Based Nanocoatings DOI Creative Commons
Yang Zhen, Jiabao Huang, Jingyuan Chen

et al.

C – Journal of Carbon Research, Journal Year: 2025, Volume and Issue: 11(2), P. 26 - 26

Published: April 1, 2025

Co-based amorphous wires (Co-AWs) are functional materials renowned for their high impedance change rate in magnetic fields and a pronounced giant magnetoimpedance (GMI) effect. In this study, magnetron sputtering (MS) dip-coating (DC) techniques were employed to fabricate carbon-based nanocoatings aimed at modulating the GMI properties of Co-AWs. The responses composite Co-AWs with coatings comparatively analyzed. results demonstrate that both methods effectively enhanced coated DC method emerged as rapid efficient approach forming film, achieving modest enhancement performance (10% enhancement). contrast, MS technique proved more effective improving effect, yielding superior results. via Ms exhibited smoother surfaces reduced coercivity. Notably, effect increased thickness sputtered carbon coatings, reaching maximum 522% (a remarkable 357% enhancement) sensitivity 33.8%/Oe coating 334 nm. observed trend layer corresponded closely variations transverse permeability, determined by vibrating sample magnetometry (VSM). Furthermore, induced changes initial quenching stress on surface Co-AWs, leading alterations significant reduction characteristic frequency Our findings provide valuable insights into modulation paving way optimized application advanced sensor technologies.

Language: Английский

Citations

0
Magnetic Properties of Bilayer Penta-Graphene-Like Nanostructures: A Monte Carlo Study DOI Creative Commons
Z. Fadil, Chaitany Jayprakash Raorane, R. El Fdil

et al.

ECS Journal of Solid State Science and Technology, Journal Year: 2025, Volume and Issue: 14(3), P. 031002 - 031002

Published: Feb. 20, 2025

This study explores the magnetic properties of bilayer Penta-graphene-like nanostructures using Monte Carlo simulations, focusing on effects temperature, exchange interactions, crystal field anisotropy, and external fields. The analysis reveals how these factors govern phases, transitions, overall stability. Furthermore, it examines spin alignment dynamics phase boundaries, highlighting potential for advanced spintronic devices, high-density memory, precision sensors, owing to their highly tunable responses.

Language: Английский

Citations

0
Magnetic skyrmions on flexible substrates DOI

Sheng Qiu,

Yaodong Wu, Huali Yang

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(14)

Published: April 1, 2025

Magnetic skyrmions are topological spin swirls possessing intriguing electromagnetic properties. The integration of skyrmion materials into flexible substrates has led to the development spintronics with high performance. However, research remains limited. Here, we report growth [Pt/Co/Ta]10 multilayer, a typical system hosting skyrmions, on multiple substrates. By combining atomic force microscopy magnetization measurements, establish correlation between surface morphology and perpendicular magnetic anisotropy. field-driven evolution is also discussed. Additionally, explain observed differences in domain structures samples grown Si substrates, relationship width variations parameters investigated. Our findings reveal that can be diverse tuned by substrate morphology, which shows promising prospects for wearable spintronic devices.

Language: Английский

Citations

0